Determining the optimal load for resisted sprint training with sled towing

Area of Science:

• Sports Science
• Biomechanics
• Athletic Training

Background:

• Resisted sprint training is effective but can alter running mechanics if loads are excessive.
• Effective load management is vital for preserving the specificity of resisted sprint training.
• Velocity loss percentage is a common method for monitoring training intensity.

Purpose of the Study:

• To establish a precise method for determining the optimal load in sled towing resisted sprint training.
• To develop a regression equation for calculating appropriate training loads during the maximum velocity phase.
• To enhance the specificity and effectiveness of resisted sprint training protocols.

Main Methods:

• A regression equation was developed to calculate training load based on velocity loss.
• The study involved 26 national-level athletes from Spain and France.
• Data collection occurred on a synthetic track surface using athletic spikes.

Main Results:

• The derived regression equation is % body mass = (-0.8674 x % velocity) + 87.99.
• This equation allows for the calculation of optimal sled towing loads.
• The findings provide a quantifiable approach to load prescription.

Conclusions:

• The developed regression equation is specific to the tested conditions (surface, sled towing).
• It offers a practical tool for coaches to prescribe optimal loads for acceleration and maximum velocity training.
• Implementing this equation can help maintain training specificity and prevent detrimental changes in running patterns.